在c++中将字符串words[]转换为双精度feature[]

#include <iostream>
#include <string>
#include <vector>
#include <sstream>

int main() {
    std::string words[] = {"1.1", "2.2", "3.3", "4.4"};
    int size = sizeof(words) / sizeof(words[0]);
    double feature[size];

    for (int i = 0; i < size; ++i) {
        std::istringstream iss(words[i]);
        if (!(iss >> feature[i])) {
            std::cerr << "Error converting string to double at index "<< i << std::endl;
            feature[i] = 0.0; // 或者其他错误处理
        }
    }

    // 输出转换后的双精度数组
    for (int i = 0; i < size; ++i) {
        std::cout << feature[i] << " ";
    }
    std::cout << std::endl;

    return 0;
}